CN110975026A - Pulse type negative pressure suction device - Google Patents
Pulse type negative pressure suction device Download PDFInfo
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- CN110975026A CN110975026A CN201911348722.5A CN201911348722A CN110975026A CN 110975026 A CN110975026 A CN 110975026A CN 201911348722 A CN201911348722 A CN 201911348722A CN 110975026 A CN110975026 A CN 110975026A
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- negative pressure
- liquid
- generating device
- plate
- pressure generating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
- A61M1/75—Intermittent or pulsating suction
Abstract
The invention discloses a pulse type negative pressure suction device, belonging to the field of suction devices, and comprising a guide sheet body with a strip-shaped structure for drainage, a negative pressure generating device for accelerating the drainage speed, a pulse extrusion device for controlling the pulse type negative pressure of the negative pressure generating device and a circulation pipeline, wherein the pulse extrusion device extrudes the negative pressure generating device in a pulse type mode to generate intermittent negative pressure in the guide sheet body, the flow rate of liquid entering the negative pressure generating device from the guide sheet body is accelerated during negative pressure, the normal flow rate of liquid is discharged to the outside during non-negative pressure, the drainage sheet can be arranged, the liquid circulation speed is increased, the guide of accumulated liquid in tissues or body cavities of a patient is accelerated by the negative pressure principle, and the negative pressure drainage is intermittently realized by arranging the pulse extrusion device to increase the liquid volume during negative pressure drainage, the liquid is made to flow out through the pipeline at variable speed, which helps to reduce the blockage of the pipeline caused by the drainage liquid.
Description
Technical Field
The invention relates to the field of suction devices, in particular to a pulse type negative pressure suction device.
Background
In clinical surgery, in order to guide liquid such as pus, blood and the like accumulated in human tissues or body cavities to the outside of the body, prevent postoperative infection and promote wound healing, a drainage tube is usually arranged in a patient body, one end of the drainage tube is arranged in the patient body, the other end of the drainage tube is arranged outside the patient body, and meanwhile, because the drainage tube is a foreign body, the drainage tube is arranged in the body for too long time, infection is likely to occur around drainage objects, so that drainage gauze arranged in wound cavities needs to be replaced every day and is locally and strictly disinfected. The clinical surgical drainage tubes have various types, some are used for catheterization, and some are used for wounds, thoracic cavities, brain cavities, gastrointestinal tracts, biliary tracts and the like.
However, the existing drainage tube is generally tubular, and drains pus, blood and other liquids accumulated in tissues or body cavities of a patient to the outside of the body through natural pressure, the drainage speed is slow, and the change of the amount of drainage at one time is small, so that the speed of the liquid flowing out is uniform, the probability of blockage of the pipeline caused by the liquid is high, once the pipeline is blocked, the liquid is not easy to be discharged and retained in the body of the patient, postoperative infection is easy to cause, and wound healing is affected.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a pulse type negative pressure suction device which can realize the arrangement of a drainage sheet, improve the liquid circulation speed, accelerate the guidance of accumulated liquid in tissues or body cavities of a patient through a negative pressure principle, realize the negative pressure drainage intermittently by arranging a pulse extrusion device, increase the liquid amount during the negative pressure drainage, ensure that the liquid flows out through a pipeline at variable speed, and contribute to reducing the blockage of the drainage liquid to the pipeline.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A pulse type negative pressure suction device comprises a guide sheet body with a strip-shaped structure for drainage, a negative pressure generating device for accelerating the drainage speed of the guide sheet body, a pulse extrusion device for controlling the pulse type negative pressure of the negative pressure generating device and a circulation pipeline, wherein the circulation pipeline is arranged between the guide sheet body and the negative pressure generating device and is used for guiding liquid to the outside and preventing the liquid from entering the negative pressure generating device, the pulse extrusion device extrudes the negative pressure generating device in a pulse type mode to generate intermittent negative pressure in the guide sheet body, the flow rate of the liquid entering the negative pressure generating device from the guide sheet body is accelerated during negative pressure, the normal flow rate of the liquid discharged to the outside is accelerated during non-negative pressure, the guide of the liquid accumulated in tissues or body cavities of a patient can be accelerated through the negative pressure principle, and the negative pressure drainage is realized intermittently by arranging the pulse extrusion, the liquid volume when increase negative pressure drainage, make the liquid variable speed flow through the pipeline, help reducing the jam that drainage liquid caused to the pipeline, can realize setting up the drainage piece, improve liquid circulation speed, and accelerate the guide to patient tissue occasionally gathering liquid in the body cavity through the negative pressure principle, and through setting up pulse extrusion device, intermittent type nature realizes the negative pressure drainage, the liquid volume when increase negative pressure drainage, make the liquid variable speed flow through the pipeline, help reducing the jam that drainage liquid caused to the pipeline.
Further, the guide piece body includes the main guide piece of U-shaped structure, the even vice guide piece in a plurality of intervals of the inner fixedly connected with of main guide piece, adjacent two cut a plurality of infiltration holes that have evenly distributed between the vice guide piece, be equipped with the inner chamber in the main guide piece, the inner chamber is located the infiltration hole downside, and a plurality of infiltration holes all with the inside intercommunication of inner chamber, form the passageway that supplies the liquid circulation between two adjacent vice guide pieces to make the liquid circulation more unblocked, the liquid that is located between a plurality of vice guide pieces can spill to the inner chamber from the infiltration hole, makes things convenient for negative pressure generating device to carry out the negative pressure.
Furthermore, the horizontal line that the top of vice guide piece is located is less than the horizontal line that main guide piece up end is located, when being convenient for take off the guide piece body from the human body, the point portion of vice guide piece is difficult for fish tail patient's skin, effectively protects patient.
Further, the negative pressure generating device comprises a threaded plate detachably connected to the pulse extrusion device, a limited penetrating plate is fixedly connected to the rear end of the threaded plate, a pair of through holes are drilled in the threaded plate and the limited penetrating plate, the inner ends of the through holes are correspondingly connected with a first one-way valve and a second one-way valve which are in one-way circulation and opposite in circulation direction respectively, the through holes are in butt joint with a circulation pipeline, an air bag is fixedly connected to one end, far away from the threaded plate, of the limited penetrating plate, a compression spring is fixedly connected to the inner ends of the air bag and vertically distributed with the limited penetrating plate, the through holes are respectively provided with one-way gas inlet or outlet functions, gas can enter from the interior of the guide piece only, negative pressure in the guide piece body is convenient to form, and the elasticity of the compression spring is helpful for recovering the air bag.
Furthermore, the pulse extrusion device comprises a shell and a threaded hole which is formed in the shell and facilitates the disassembly and assembly of the negative pressure generation device, the negative pressure generation device can be conveniently disassembled and replaced, an extrusion plate used for extruding the negative pressure generation device is arranged on the inner side of the shell, a pair of elastic rods are fixedly connected to the shell and are respectively inserted into positioning grooves formed in two ends of the extrusion plate, the positioning grooves are located above the central horizontal line of the extrusion plate, the extrusion plate can be conveniently taken out by pulling the pair of elastic rods towards two outer sides, a driving mechanism used for driving the extrusion plate to rotate clockwise by taking the connecting line of the pair of through holes as the axis is installed at the side end of the shell, an extension spring used for pulling the extrusion plate to rotate anticlockwise is fixedly connected between the extrusion plate and the shell, the contact point of the extension spring and the extrusion plate is located on the lower side of the elastic rods, and the extension spring and the driving mechanism act together to realize, thereby effectively realizing the intermittent extrusion to the negative pressure generating device.
Furthermore, actuating mechanism is including installing motor and the locating plate at the casing side, and the output shaft of motor and locating plate rotate and be connected, the output shaft outer end of motor has cup jointed and is used for supporting the eccentric wheel that presses the stripper plate to make the stripper plate activity, and the eccentric wheel is located the upside of elastic force pole with the contact point of stripper plate, the side of casing is opened and is chiseled the mounting groove that has and corresponds with the eccentric wheel, because the rotation point of eccentric wheel is not on the central point for the contact point of eccentric wheel and stripper plate changes, and the contact point is located the elastic force pole upside all the time, and cooperation extension spring realizes the rotation of stripper plate.
Further, the casing includes preceding shell, drain pan and backshell, preceding shell and backshell difference fixed connection are at the both ends of drain pan, the up end of drain pan sets up to the arcwall face, makes the stripper plate more laminate with the drain pan upper end to make things convenient for the stripper plate to negative pressure generating device's extrusion.
Furthermore, the upper end of drain pan is dug a spacing groove, the spacing groove is used for restricting the rotation range of stripper plate so that the stripper plate does not contact with negative pressure generating device, makes and leaves the clearance between stripper plate and negative pressure generating device, is convenient for be difficult for excessively compressing the compression spring in the negative pressure generating device to make difficult influence compression spring's elasticity.
Further, circulation pipeline is including running through in guide piece body side and being used for deriving liquid one-way to external drain pipe and the intake pipe to negative pressure generating device for the gas one-way derivation, be connected with the back flow between drain pipe and the intake pipe, the back flow is used for going into the one-way backward flow of liquid of intake pipe to the drain pipe discharge with the mistake.
Further, prevent losing mechanism and include holding ring and a pair of connecting block, connecting block and guide piece body lateral wall fixed connection, holding ring fixed connection is close to the one end of guide piece body at the connecting block, and leaves the interval that is used for supplying the suture hour hand to pass between a pair of connecting block, when sewing up the skin, can pass the suture and prevent losing the mechanism and make and prevent losing the mechanism location in suture department to make the guide piece body be difficult for losing.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
one, this scheme can realize setting up the drainage piece, improves liquid circulation speed, and accelerates the guide to patient's tissue or the liquid that gathers in the body cavity through the negative pressure principle, and through setting up pulse extrusion device, intermittent type nature realizes the negative pressure drainage, and the liquid volume when increasing the negative pressure drainage makes the liquid variable speed pass through the pipeline and flows, helps reducing the jam that drainage liquid caused the pipeline.
Two, the guide piece body includes the main guide piece of U-shaped structure, the even vice guide piece in a plurality of intervals of the inner fixedly connected with of main guide piece, it has evenly distributed's a plurality of infiltration holes to cut between two adjacent vice guide pieces, be equipped with the inner chamber in the main guide piece, the inner chamber is located the infiltration hole downside, and a plurality of infiltration holes all communicate with inner chamber inside, form the passageway that supplies the liquid circulation between two adjacent vice guide pieces, so that the liquid circulation is more unblocked, liquid that is located between a plurality of vice guide pieces can spill to the inner chamber from the infiltration hole, make things convenient for negative pressure generating device to carry out the negative pressure.
And the horizontal line of the top end of the auxiliary guide sheet is lower than the horizontal line of the upper end face of the main guide sheet, so that when the guide sheet body is taken down from a human body, the tip of the auxiliary guide sheet is not easy to scratch the skin of a patient, and the patient is effectively protected.
The negative pressure generating device comprises a threaded plate detachably connected to the pulse extrusion device, a limited penetrating plate is fixedly connected to the rear end of the threaded plate, a pair of through holes are formed in the threaded plate and the limited penetrating plate, the inner ends of the pair of through holes correspond to a first one-way valve and a second one-way valve which are connected with one-way circulation and opposite in circulation direction respectively, the through holes with one-way entering function are in butt joint with a circulation pipeline, one end fixedly connected with air bags far away from the threaded plate are penetrated through the limited penetrating plate, inner end fixedly connected with compression springs of the air bags, the compression springs are vertically distributed with the limited penetrating plate, the pair of through holes respectively have one-way gas entering or entering and exiting functions, gas can enter the guiding plate only from the inside, negative pressure inside the guiding plate body is convenient to form, and elasticity of the.
Fifthly, the pulse extrusion device comprises a shell and a threaded hole which is drilled above the shell and facilitates the disassembly and assembly of the negative pressure generating device, the negative pressure generating device is convenient to disassemble and replace, the inner side of the shell is provided with an extrusion plate for extruding the negative pressure generating device, the shell is fixedly connected with a pair of elastic rods, the pair of elastic rods are respectively inserted into positioning grooves formed in two ends of the extrusion plate, the positioning grooves are positioned above the central horizontal line of the extrusion plate, the extrusion plate can be conveniently taken out by pulling the pair of elastic rods towards two outer sides, a driving mechanism for driving the extrusion plate to clockwise rotate by taking the connecting line of the pair of through holes as the axis is installed at the side end of the shell, an extension spring for pulling the extrusion plate to anticlockwise rotate is fixedly connected between the extrusion plate and the shell, the contact point of the extension spring and the extrusion plate is positioned at the lower side of the elastic rods, thereby effectively realizing the intermittent extrusion to the negative pressure generating device.
The driving mechanism comprises a motor and a positioning plate which are installed at the side end of the shell, an output shaft of the motor is rotatably connected with the positioning plate, an eccentric wheel which is used for abutting against the extrusion plate to enable the extrusion plate to move is sleeved at the outer end of an output shaft of the motor, a contact point of the eccentric wheel and the extrusion plate is located on the upper side of the elastic rod, a mounting groove corresponding to the eccentric wheel is formed in the side end of the shell in a chiseled mode, the rotating point of the eccentric wheel is not located on the central point, the contact point of the eccentric wheel and the extrusion plate is enabled to be changed, the contact point is located on the.
Seventhly, the casing includes preceding shell, drain pan and backshell, and preceding shell and backshell fixed connection are at the both ends of drain pan respectively, and the up end of drain pan sets up to the arcwall face, makes the stripper plate more laminate with the drain pan upper end to make things convenient for the stripper plate to negative pressure generating device's extrusion.
Eighthly, a limiting groove is formed in the upper end of the bottom shell, the limiting groove is used for limiting the rotation range of the extrusion plate so that the extrusion plate does not contact with the negative pressure generating device, a gap is reserved between the extrusion plate and the negative pressure generating device, the compression spring in the negative pressure generating device is not easily extruded excessively, and therefore elasticity of the compression spring is not easily influenced.
Ninthly, the circulation pipeline comprises a liquid outlet pipe penetrating through the side end of the guide piece body and used for leading out liquid to the outside in an one-way mode and an air inlet pipe for leading out gas to the negative pressure generating device in an one-way mode, a return pipe is connected between the liquid outlet pipe and the air inlet pipe, and the return pipe is used for leading the liquid entering the air inlet pipe in an one-way mode to flow back to the liquid outlet pipe in a wrong mode.
Tenth, prevent losing the mechanism and include holding ring and a pair of connecting block, connecting block and guide piece body lateral wall fixed connection, holding ring fixed connection is close to the one end of guide piece body at the connecting block, and leaves the interval that is used for supplying the suture hour hand to pass between a pair of connecting block, when sewing up the skin, can pass the suture and prevent losing the mechanism and make and prevent losing the mechanism location in suture department to make the guide piece body be difficult for losing.
Drawings
FIG. 1 is a perspective view of the structure of the guide plate body of the present invention;
FIG. 2 is a schematic front view of the guide plate body according to the present invention;
FIG. 3 is a perspective view of the structure of the negative pressure generating device and the pulse extrusion device of the present invention;
FIG. 4 is a schematic front view of the negative pressure generating device of the present invention;
FIG. 5 is a schematic top view of the negative pressure generating device of the present invention;
FIG. 6 is a perspective view of a portion of the structure of the negative pressure generating device and the pulse pressing device of the present invention;
FIG. 7 is a schematic structural view of the negative pressure generating device and the pulse extrusion device after the lateral surfaces thereof remove the extrusion plate and the extension spring;
fig. 8 is a schematic view of the structure of the flow line of the present invention.
The reference numbers in the figures illustrate:
the device comprises a guide piece body 1, a main guide piece 11, an auxiliary guide piece 12, an inner cavity 13, a penetration hole 14, a negative pressure generating device 2, a thread plate 21, a penetration limiting plate 22, a through hole 23, a first one-way valve 231, a second one-way valve 232, a compression spring 24, an air bag 25, a pulse extrusion device 3, a shell 31, a front shell 311, a bottom shell 312, a rear shell 313, a spring rod 32, an extrusion plate 33, a tension spring 34, a driving mechanism 35, an installation groove 351, an eccentric wheel 352, a motor 353, a positioning plate 354, a circulation pipeline 4, a liquid outlet pipe 41, an air inlet pipe 42, a liquid return pipe 43, an anti-lost mechanism 5, a positioning ring 51 and a connecting block.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-8, a pulse type negative pressure suction device, including a bar-shaped structure for guiding the body 1, a negative pressure generator 2 for accelerating the speed of the body 1, a pulse extrusion device 3 for controlling the pulse type negative pressure of the negative pressure generator 2, and a circulation pipeline 4, the circulation pipeline 4 is installed between the body 1 and the negative pressure generator 2, for guiding the liquid to the outside and preventing the liquid from entering the negative pressure generator 2, the pulse extrusion device 3 extrudes the negative pressure generator 2 in the pulse type to generate intermittent negative pressure in the body 1, during negative pressure, the flow rate of the liquid entering the negative pressure generator 2 from the body 1 is accelerated, and when no negative pressure is generated, the gas is discharged to the normal flow rate of the liquid outside.
Referring to fig. 1-2, the guide sheet body 1 includes a main guide sheet 11 having a U-shaped structure, a plurality of auxiliary guide sheets 12 are fixedly connected to an inner end of the main guide sheet 11, a plurality of penetration holes 14 are uniformly distributed between two adjacent auxiliary guide sheets 12, an inner cavity 13 is disposed in the main guide sheet 11, the inner cavity 13 is located below the penetration holes 14, the penetration holes 14 are all communicated with an inner portion of the inner cavity 13, a passage for liquid to flow is formed between two adjacent auxiliary guide sheets 12, so that the liquid can flow smoothly, the liquid located between the auxiliary guide sheets 12 can leak into the inner cavity 13 from the penetration holes 14, the negative pressure generating device 2 can conveniently perform negative pressure, a horizontal line at a top end of the auxiliary guide sheet 12 is lower than a horizontal line at an upper end surface of the main guide sheet 11, so that when the guide sheet body 1 is taken down from a human body, a tip portion of the auxiliary guide sheet 12 is not easy to scratch the skin of the patient, effectively protect the patient.
Referring to fig. 3-7, the negative pressure generating device 2 includes a screw plate 21 detachably connected to the pulse extrusion device 3, a limited penetration plate 22 is fixedly connected to a rear end of the screw plate 21, a diameter of the limited penetration plate 22 is larger than that of the screw hole, so that the screw plate 21 is not easy to penetrate through the screw hole, a pair of through holes 23 are formed in the screw plate 21 and the limited penetration plate 22, inner ends of the pair of through holes 23 are respectively and correspondingly connected with a first one-way valve 231 and a second one-way valve 232 which are communicated in a one-way manner and have opposite flowing directions, wherein the through holes 23 having a one-way entering function are butted with the flowing pipeline 4, one end of the limited penetration plate 22 far away from the screw plate 21 is fixedly connected with an air bag 25, an inner end of the air bag 25 is fixedly connected with a compression spring 24, the compression spring 24 and the limited penetration plate 22 are vertically distributed, the pair of through, the formation of negative pressure in the guide piece body 1 is facilitated, and the elastic force of the compression spring 24 contributes to the recovery of the air bag 25.
The pulse extrusion device 3 comprises a shell 31 and a threaded hole which is drilled above the shell 31 and facilitates the disassembly and assembly of the negative pressure generating device 2, and the negative pressure generating device 2 is convenient to disassemble and replace, a squeezing plate 33 for squeezing the negative pressure generating device 2 is arranged on the inner side of the shell 31, a pair of elastic rods 32 are fixedly connected on the shell 31, the pair of elastic rods 32 are respectively inserted into positioning grooves which are formed in two ends of the squeezing plate 33, the positioning grooves are positioned above the central horizontal line of the squeezing plate 33, the squeezing plate 33 can be conveniently taken out by pulling the pair of elastic rods 32 towards two outer sides, a driving mechanism 35 which drives the squeezing plate 33 to clockwise rotate by taking the connecting line of the pair of through holes 23 as the axis is arranged at the side end of the shell 31, a tension spring 34 for pulling the squeezing plate 33 to anticlockwise rotate is fixedly connected between the squeezing plate 33 and the shell 31, and the contact point of the tension spring, the tension spring 34 and the driving mechanism 35 work together to realize the left-right rotation of the pressing plate 33, thereby effectively realizing the intermittent pressing of the negative pressure generating device 2.
Referring to fig. 6-7, the driving mechanism 35 includes a motor 353 and a positioning plate 354 mounted at a side end of the housing 31, the motor 353 may adopt a speed-adjustable motor, the extrusion interval is changed by adjusting the speed of the motor, an output shaft of the motor 353 is rotatably connected to the positioning plate 354, an eccentric wheel 352 for pressing the extrusion plate 33 to move the extrusion plate 33 is sleeved at an outer end of the output shaft of the motor 353, a contact point of the eccentric wheel 352 and the extrusion plate 33 is located at an upper side of the elastic rod 32, an installation groove 351 corresponding to the eccentric wheel 352 is drilled at a side end of the housing 31, since a rotation point of the eccentric wheel 352 is not located at a central point, the contact point of the eccentric wheel 352 and the extrusion plate 33 is changed, and the contact point is always located at the upper side of the elastic rod 32.
Referring to fig. 7, the housing 31 includes a front shell 311, a bottom shell 312 and a rear shell 313, the front shell 311 and the rear shell 313 are respectively and fixedly connected to two ends of the bottom shell 312, an upper end surface of the bottom shell 312 is set to be an arc surface, so that the upper end of the pressing plate 33 is more attached to the upper end of the bottom shell 312, thereby facilitating the pressing of the pressing plate 33 on the negative pressure generating device 2, a limiting groove is cut on the upper end of the bottom shell 312, the limiting groove is used for limiting a rotation range of the pressing plate 33 so that the pressing plate 33 does not contact with the negative pressure generating device 2, so that a gap is left between the pressing plate 33 and the negative pressure generating device 2, thereby facilitating the excessive pressing of the compression spring 24 in the negative pressure generating device 2, and further preventing the.
Referring to fig. 8, the circulation pipeline 4 includes a liquid outlet pipe 41 penetrating through the side end of the guide plate body 1 for guiding the liquid to the outside in a single direction and an air inlet pipe 42 for guiding the air to the negative pressure generating device 2 in a single direction, a return pipe 43 is connected between the liquid outlet pipe 41 and the air inlet pipe 42, and the return pipe 43 is used for returning the liquid mistakenly entering the air inlet pipe 42 to the liquid outlet pipe 41 in a single direction for discharging.
Referring to fig. 2, the anti-lost mechanism 5 includes a positioning ring 51 and a pair of connecting blocks 52, the connecting blocks 52 are fixedly connected to the side wall of the guide piece body 1, the positioning ring 51 is fixedly connected to one end of the connecting block 52 close to the guide piece body 1, and a space for the needle to pass through is left between the pair of connecting blocks 52, when suturing the subcutaneous tissues, the suture can pass through the anti-lost mechanism 5 to position the anti-lost mechanism 5 at the suture, so that the guide piece body 1 is not easily lost.
When the device is used, two ends of the guide sheet body 1 are respectively arranged in the body and the outside of the body of a patient, the anti-lost mechanism 5 is connected with a skin suture line, so that the guide sheet body 1 is not easy to lose, the safety of the patient is ensured, and simultaneously, the medical dispute is reduced, the guide sheet body 1 can guide liquid such as pus, blood and the like accumulated in human tissues or body cavities to the outside of the body, in order to accelerate the guiding speed, the pulse extrusion device 3 can be driven to work, namely, the power supply of the motor 353 is switched on, so that the eccentric wheel 352 eccentrically moves, the extrusion plate 33 is intermittently pushed, because the contact point of the eccentric wheel 352 and the extrusion plate 33 and the contact point of the extension spring 34 and the extrusion plate 33 are respectively arranged at the upper side and the lower side of the elastic rod 32, and the elastic rod 32 is arranged at the upper half part of the extrusion plate 33, and matched with the tension action of the extension, when the negative pressure generating device rotates leftwards, the air bag 25 in the negative pressure generating device 2 is extruded by the extruding plate 33, so that gas is discharged to the outside through the through hole 23 with the gas outlet function, when the negative pressure generating device rotates rightwards, the air bag 25 recovers the expansion state under the help of the elastic force of the compression spring 24, the gas enters the air through the through hole 23 with the gas inlet function, and the through hole 23 is communicated with the guide piece body 1 through the circulating pipeline 4, so that the gas in the guide piece body 1 is indirectly absorbed, the air in the guide piece body 1 is reduced to generate negative pressure, liquid guided by the guide piece body 1 is absorbed into the inner cavity 13 and then discharged through the liquid outlet pipe 41, and when the liquid enters the air inlet pipe 42 carelessly, the liquid can flow back to the liquid outlet pipe 41.
Can realize setting up the drainage piece, improve liquid circulation speed, and accelerate the guide to gathering liquid among patient's tissue or the body cavity through the negative pressure principle, and through setting up pulse extrusion device 3, intermittent type nature realizes the negative pressure drainage, and the liquid volume when the increase negative pressure drainage makes the liquid variable speed pass through the pipeline and flows, helps reducing the jam that drainage liquid caused to the pipeline.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a pulsed negative pressure suction device, is used for guide piece body (1) of drainage, is used for making guide piece body (1) drainage speed negative pressure generating device (2) that accelerate, pulse extrusion device (3) and circulation pipeline (4) of control negative pressure generating device (2) pulsed negative pressure including bar structure, its characterized in that: circulation pipeline (4) are installed between guide piece body (1) and negative pressure generating device (2) for with the external world of liquid direction and prevent that liquid from getting into in negative pressure generating device (2), pulse extrusion device (3) pulsed extrusion negative pressure generating device (2) make and produce intermittent type nature negative pressure in guide piece body (1), during the negative pressure, gaseous from guide piece body (1) entering negative pressure generating device (2) in the liquid velocity of flow accelerate, during the non-negative pressure, gaseous row to external liquid normal velocity of flow.
2. The pulsed negative pressure aspiration device of claim 1, wherein: guide piece body (1) is including main guide piece (11) of U-shaped structure, the even vice guide piece (12) in a plurality of intervals of the inner fixedly connected with of main guide piece (11), adjacent two cut a plurality of infiltration holes (14) that have evenly distributed between vice guide piece (12), be equipped with inner chamber (13) in main guide piece (11), inner chamber (13) are located infiltration hole (14) downside, and a plurality of infiltration holes (14) all communicate with inner chamber (13) inside.
3. The pulsed negative pressure aspiration device of claim 2, wherein: the horizontal line of the top end of the auxiliary guide sheet (12) is lower than the horizontal line of the upper end face of the main guide sheet (11).
4. The pulsed negative pressure aspiration device of claim 1, wherein: negative pressure generating device (2) is including dismantling screw plate (21) of connection on pulse extrusion device (3), the limited board (22) of wearing of rear end fixed connection of screw plate (21), all cut a pair of through-hole (23) on screw plate (21) and the limit board (22), it is a pair of the inner of through-hole (23) corresponds respectively and is connected with one-way circulation and circulation opposite direction's first check valve (231) and second check valve (232), wherein has one-way entering function through-hole (23) and circulation pipeline (4) butt joint, the one end fixedly connected with gasbag (25) of screw plate (21) are kept away from to limit board (22), the inner fixedly connected with compression spring (24) of gasbag (25), and compression spring (24) and limit board (22) vertical distribution.
5. The pulsed negative pressure aspiration device of claim 1, wherein: the pulse extrusion device (3) comprises a shell (31) and a threaded hole which is arranged above the shell (31) and facilitates the disassembly and the assembly of the negative pressure generating device (2), the inner side of the shell (31) is provided with an extrusion plate (33) for extruding the negative pressure generating device (2), the shell (31) is fixedly connected with a pair of elastic rods (32), and a pair of elastic rods (32) are respectively inserted into positioning grooves formed at two ends of the extrusion plate (33), the locating slot is positioned above the central horizontal line of the extrusion plate (33), a driving mechanism (35) for driving the extrusion plate (33) to rotate clockwise by taking the connecting line of the pair of through holes (23) as the axis is arranged at the side end of the shell (31), an extension spring (34) used for pulling the extrusion plate (33) to rotate anticlockwise is fixedly connected between the extrusion plate (33) and the shell (31), and the contact point of the tension spring (34) and the pressing plate (33) is located on the lower side of the elastic rod (32).
6. The pulsed negative pressure aspiration device of claim 5, wherein: the driving mechanism (35) comprises a motor (353) and a positioning plate (354) which are installed at the side end of the shell (31), an output shaft of the motor (353) is rotatably connected with the positioning plate (354), an eccentric wheel (352) which is used for pressing the extrusion plate (33) to enable the extrusion plate (33) to move is sleeved at the outer end of the output shaft of the motor (353), the contact point of the eccentric wheel (352) and the extrusion plate (33) is located on the upper side of the elastic rod (32), and a mounting groove (351) corresponding to the eccentric wheel (352) is formed in the side end of the shell (31) in a chiseled mode.
7. The pulsed negative pressure aspiration device of claim 5, wherein: casing (31) are including preceding shell (311), drain pan (312) and backshell (313), preceding shell (311) and backshell (313) fixed connection respectively are at the both ends of drain pan (312), the up end of drain pan (312) sets up to the arcwall face.
8. The pulsed negative pressure aspiration device of claim 7, wherein: the upper end of the bottom shell (312) is provided with a limiting groove, and the limiting groove is used for limiting the rotation range of the extrusion plate (33) so that the extrusion plate (33) is not in contact with the negative pressure generating device (2).
9. The pulsed negative pressure aspiration device of claim 1, wherein: circulation pipeline (4) are used for deriving liquid one-way to external drain pipe (41) and intake pipe (42) to negative pressure generating device (2) for the gas one-way derivation including running through in guide piece body (1) side, be connected with back flow (43) between drain pipe (41) and intake pipe (42), back flow (43) are used for going into the one-way backward flow of liquid of intake pipe (42) to drain pipe (41) discharge with the mistake.
10. The pulsed negative pressure aspiration device of claim 1, wherein: prevent losing mechanism (5) including holding ring (51) and a pair of connecting block (52), connecting block (52) and guide piece body (1) lateral wall fixed connection, holding ring (51) fixed connection is close to the one end of guiding piece body (1) in connecting block (52), and leaves the interval that is used for supplying the suture hour hand to pass between a pair of connecting block (52).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114306762A (en) * | 2021-12-10 | 2022-04-12 | 北京大学第三医院（北京大学第三临床医学院） | Impulse type liquid guide device and liquid conveying and discharging system |
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